package com.hyjx.framework.common.util;

import javax.servlet.http.HttpServletRequest;

/**
 * http请求对象工具类
 *
 * @author dijian
 */
public class HttpRequestUtil {

    /**
     * 通过http请求对象获得客户端ip
     *
     * @param request 服务端请求对象
     * @return
     */
    public static String getRemoteHost(HttpServletRequest request) {
        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        return ip;
    }
}
